Hot Water Suit: Neoprene vs Denim?

I'm looking at buying a hot water suit and noticed that a denim suit is much cheaper than a neoprene one. Since I have never personally used a denim hot water suit I was wondering how well they worked since the denim does not insulate as well as neoprene?

I am diving a denim suit right now. I need to crank the hot water unit way up. I love this suit but im looking for a neoprene 1 as we speak. Extreme cold water is rough with this suit. Neoprene suits are a steady 100 - 105 in mixing tank. My denim suit is at 115-120 degrees. By time it gets to me under the icey water im still asking to crank up the temp. Plus ive shredded 2 so far. Climbing on pile and other stuff wears this suit out quick. Ya its cheap but in the long haul, its more expensive to constantly purchase more.